Use the Seam Guide Setter to mark a scant 1/4" seam on any sewing machine. Includes setter and six Peel & Stick Seam Guides with reusable adhesive. Seam Guide Setter: 4-3/4" x 1-1/4", Seam Guides: 2" x 1/2". *Guidelines4Quilting items may not be sold on third-party websites such as Amazon, eBay, Walmart, etc.